Further, Toledo Nanochess in C as well, occupies only 1274 non-blank characters, while Toledo Picochess fits in 1K of source, but without en passant, castling or minor promotion. Toledo Javascript is the Nanochess JavaScript version, 2258 bytes , and Toledo Java the Java port. In January 2015, Óscar Toledo G. released Toledo Atomchess, a chess program of only 481 bytes of x86 machine code [4].